/* ==========================================================================
   Reproductor de audio (estilos de site.css, extraídos para poder usarse
   junto a la hoja de estilo de los libros, que no los define).
   ========================================================================== */

:root {
    --radius-sm: 8px;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

.track {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    transition: background 0.2s var(--ease);
}

.track:hover {
    background: var(--accent-soft);
}

.track-number {
    min-width: 26px;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--muted);
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.track-name {
    flex: 1;
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--ink);
}

/* El elemento <audio> original se conserva en el DOM (es el que suena), pero
   se oculta: la interfaz la construye site.js con estas clases. */
.track > audio {
    display: none;
}

.player {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 340px;
    max-width: 340px;
}

.player-toggle {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    padding: 0;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    color: var(--ink-soft);
    cursor: pointer;
    transition:
        background 0.2s var(--ease),
        border-color 0.2s var(--ease),
        color 0.2s var(--ease);
}

.player-toggle svg {
    display: block;
    width: 13px;
    height: 13px;
    fill: currentColor;
}

.player-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.track.is-playing .player-toggle {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.player-bar {
    position: relative;
    flex: 1;
    min-width: 60px;
    height: 18px;
    cursor: pointer;
    touch-action: none;
}

.player-bar::before {
    content: '';
    position: absolute;
    inset: 50% 0 auto 0;
    height: 3px;
    border-radius: 999px;
    background: var(--line-strong);
    transform: translateY(-50%);
}

.player-fill {
    position: absolute;
    left: 0;
    top: 50%;
    width: 0;
    height: 3px;
    border-radius: 999px;
    background: var(--accent);
    transform: translateY(-50%);
}

.player-fill::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: var(--accent);
    opacity: 0;
    transform: translate(50%, -50%) scale(0.4);
    transition:
        opacity 0.2s var(--ease),
        transform 0.2s var(--ease);
}

.track:hover .player-fill::after,
.track.is-playing .player-fill::after,
.player-bar:focus-visible .player-fill::after {
    opacity: 1;
    transform: translate(50%, -50%) scale(1);
}

/* El anillo de foco, en forma de píldora, abraza el carril en vez de encajonarlo */
.player-bar:focus-visible {
    outline-offset: 3px;
    border-radius: 999px;
}

.player-time {
    flex-shrink: 0;
    min-width: 72px;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    color: var(--muted);
    text-align: right;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.player-sep {
    margin: 0 4px;
    opacity: 0.6;
}

.track.is-playing .player-time {
    color: var(--ink-soft);
}

/* Separador ornamental */
.divider {
    height: 1px;
    margin: 26px 16px;
    background: linear-gradient(
        to right,
        transparent,
        var(--line-strong),
        transparent
    );
}

/* --- Rejilla de vídeo ----------------------------------------------------- */